Mold for forming grooved concrete blocks



Nov. 3, 1931. w, H, DANCE 1,830,225

MOLD FOR FORMING GROOVED CONCRETE BLOCKS Filed June 26, 1929 Patented 'Nov. i3, 1931 H, pincegommem e, m srcnusms' f J Application filed June 26;

the. accompanying drawings forming apartlofthis specification i x :F igure, 1 1s a top plan view of a mold em-T bodyin-gnthe. inventiomgparts being broken away and show insecti'on. I I

Figure 2is'zan'endxview. T 1

f Figure; 3fshoWs atone/end section-on line 3ti3of-Figure 1, theiremaining portion of fthelfigure being a fragmentary side View of the moldlf- Figure 3aflis-asection. on line .3a,3a of Figures. a i a groove-forming partitions shown by; the pre ceding figures.

7 Figure 5 showsvthe parts of the partition shown by Figure '4, separated y from each otherl; v q

[Figure 6 is a fragmentary perspective view, showing portions of the bottom and 'sidemembers of the mold. r 'r -Figure7 is a perspective'view ofthe divid ing plateshown by Figures'l and 3. J Figure "8Iis a perspective view, showing a portionjof'a wallrforniedzby blocks made in the mold fi'i i Figure 9 is a section on line 9'9'of Fig (lie 8, n I k j P .i- 1 1"? "I '1 The: same' reference characters indicate the same parts-in allof'the figures; :1: I im' rove'd moldcomprises a flat-sided bottom-member: 12, and 'two movable side members {'13, adapted to standin operative positions relative to the bottom member, as shownby .full; lines in. Figure 6,; and to be moved to inoperative posi.tion s,as indicated by idotted lines; I, t, :The side members are preferably connect-, 3d .W h he be t m, m be 'ib hinges e her when in "menses nominefenoovnn coivcnnmnnnociis 1929. /Seria1 No.,373,7O1. I arrangement being suchjthat the side mem? bers areperpendicular to the 'bottcinimein;v their operativepositions', v ThefbottommemberflQ is adapted to form the flat side faces 15 and 15a, and the side -members113are adapted to formuthe flat end I faces 16 and 16a ofa concrete block.

"The 'mold com'prises 3 also a .lplurality of removable partitions. forming "the; sides of mol vi e e t d n ami s h bott m member12, between the side members13,and da -f orm g go fi d theg lwks formed in' said cavities, 'each', grooved, side a recessed-face portion 18;

in lu i g a t rg na fac p j f ea a Each partition ,1. i cl des 4 a, flats-sided eddy i 19, and groove-forming bosses20, projecting from opposite sides 'ofthe body'; provide means separably connectingfthepartitions with the side members 1'3,to maintainthjeiside members in their operativeipo'sitions and per:

mit the displacement of the1sidemembers and i e i ,1, the removal of theipartitions, said means Figure 4: is a perspective view of one ofthe being {preferably embodied as next described.

' Each partition body is provided atits; o 1

DO 9 ends K wi t n ons; 2 orming 9 tongues 21, removably inserted in spaced apart slots 22 .in' the side members 13, and with abutment-shoulders 23, bearing sepa rably on the inner sides f he side members.

vVYhen the-side membersare in their "oper' I ative positions, they bear on the abutment shoulders 23, and the tongues 21 project through the slots 22. The tongues are provided with orifices 24, formed to receive sepe arable confiners 25, bearing,on the outer sides of,, the side members 13, said confiners being preferably wedges, as shown by Figure ,1. fWhen, the con'fin'ers are removed, 'displace 'mentl'of the sidememb'ers 13 from their ap s at ive: positions and removal, of the partitions are-permitted] j I When fillings of concrete deposited in the mold'eavities haves'ufiieiently solidified, they removalfof the blocks from the mold, the con= finers 2 5 are removed, andthe-side members constitutmgrooved blocks. ,To permit the g5 areswung outwardly. The partitions and moldedblockstmay then be removed one at a time, theremoval of each partition permitting the removal of a block. Of course, the removal may progress simultaneously from both ends of the mold. V v r In the mold shown by Figure 1, some of the partition bosses 20 contact at both ends with the side members 13, so that the mold cavities are adapted to form. blocks with recessed face portions 18, extendingvthrough the ends of the blocks. Other partition bosses shown by Figure 1,1are shorter than the space i between the side members 13 and have closed ends 27, offset inwardly from one of the. side members, These bosses are adapted to cooperate with said side member and partition bodies 19in forminglthe end faces 16 on corner or end blocks showniby igures 8' and 9, said'faces closing the ends of the recessed faces or grooves 18. a YTo -decreasethelengthof a mold cavity and thiis'adapt it to form the short corner blockshown' at the right-hand "ends of Fig: ures 8 and'f9, I provide a dividing plate 28, shown separatelyby'Figure'T "Said plate is provided with recessed edge facesincluding'centr'al portions 29, formed to enter transverse slots 31 (Fig. 4 in two opposed bossesQO, and end portions 30,bf0rmed to bear onsaid bosses.

0116131669, andthe bosses 20 in another piece,

as shown by Figures 4 and '5. The body 19.

has" a'fccntinuous' "end portion and slots 33 extending from 'the' opposite end of the body to the continuous portion. The bosses 20 are op osite sidesof a tube having a continuous en portion insertible in the body slots 33, and slots '34, which receive the continuous end crtion ofthe body. v The partition thus constructed is of light weight and well adaptedto term the grooved sidesof the blocks.

"Whilethe charges in the mold cavities are soft, wood strips 38,'to"which1aths may be nailed, may be embedded in the top 'faces 15a of the charges,these faces being those which are struck'or formed by moving a straight dge along the upper edges of theside meme j l3- li a' i mold 'adapted to form rectangular building blocks having grooves'in opposite faces, said mold comprising a bottom mem her; movable side members adapted to stand j 1n operative positions relative to the bottom "member, and to, be moved' to inoperative positions, said bottom and side members; be- Ing adapted to form fiat faces on the blocks, and removable partitions forming the'isides 7 of mold cavities between the side members,

adaptedto form grooved sides on the biocks' formed in said cavities, each partition in'cluding'a'fiat-sided body and groove-formingbosses projecting from opposite sides thereof, and means separably connecting the partitionswith the side members'to mainth'eiside members in their operative posiwith two.

tions, and permit the displacement of the side members and the removal of the partitions, the body of each partition having a continuous end portion and slots extending from the opposite end of the'body to said continuous portion, the bosses being opposite sides of a tube having a continuous end portion insertible in the body slots, and slots Which-receive the continuous portion of the body.

mold adapted "to I form rectangular building blockshaving'grooves in opposite faces, said mold comprising a bottom member,,1novable side members adapted to stand in operative positions relative to the bottom 1 member, and to-be moved to inoperative positions, said bottom and side membersbeing adapted to form fiat faces on the blocks, and removable partitions torming-the sides of mold cavities between the side members, and

adapted to form grooved sides. on the blocks formed in said cavities, each partition includinga'fiat-sided body and groove forming bosses projecting fromopposite sides thereof, and means separab-ly connecting thepartitions with the side members to maintain the side members intheir operative positions, and permit the displacement of the side members and the removal of the partitions,'the body ofeach partition-having a, continuous end portion and slots extending from the opposite end of the body to said continuous" portion,-th e bosses being opposite sides of a tube'ha-ving a continuous endiportion insertible in the body slots, and slots which receive the continuous portion of the body, the bosses of at least two partitions having transverse slots, the mold comprising also a dividing plate adapted to decreasethe length of a mold cavity, and "having recessed edge faces whose central portions are formed to enter transverse slots in two opposed bosses, and

end portions formed to bear on said bosses.

3. A'mold adapted to form rectangular building blocks having grooves in opposite faces, said mold comprising a bottom member, movable side members adapted to stand in operative positions relative to the bottom member, and to be moved to inoperative positions, said bottom and-side members'being adapted to form flat :fiaces" on the blocks, and

removable partitions forming the sides of mold cavities between the side members, and adapted to form grooved sides on the blocks formed in said-cavities, each partition including a flat-sided 'body and, groove-forming bossesprojecting from opposite sides thereof, and means separab-lyconnectingthe partitions with the side members to maintain the side members" in their operative positions, and permit the displacement of the side members and the removal of thepartitions, the

body of each partition having a continuous endportion and slots extending from the oppos te-end ofthe body to said continuous portion, the bosses being opposite sides of a tube the body slots, and slots which receive the having a continuous end portion insertible in continnous portion of the body, thebosses of at least two partitions having closed ends offset inwardly from a side member of the mold to cooperate with said side members and with the bodies of said partitions in forming on a block molded in said cavity, an end face I closing the ends of grooves in said block.

In testimony whereof I have afiixed my signature. o

WILLIAM H DANCE. 

